Yes, most probably. I don't have any illusion that we'll see such a feature on the first release, but over the following expansions it could be possible in 2-3 years with better hardware.
If there was a dynamic online campaign with AI units and automatic managing/tracking of supplies on the strategic level it could open up the sim to a lot bigger and more diverse crowd.
Like you said, there's loads of people who fly both civilian and combat sims, the first for the complexity and long flights and the second for the action. Well, if they could find both aspects of simming in the same piece of software it would create a bigger community and more sales: you're flying on a short cross channel hop and mixing it up low over the sea and the next minute you're taking off in a catalina flying boat for a quiet, 3 hour lone wolf sortie chasing U-boats in stormy weather and icing conditions. It would be great
The best thing of it all would be that the more complex flying would be needed to advance the strategic objectives of the campaign, while at the same time the more action oriented players would still serve a valuable role by providing barrier patrols for the multi-engined aircraft to do their job, which in turn would create an advantage for the action oriented folks and so on. In this way, one style of gameplay contributes to the success of the other and we could fuse the tastes of different people under a common software environment.